'''Arathorn''' ('Tree of All Lords'; [[ar]] = royal, -ath = collective plural suffice, [[orn]] = tree) was the son of Chieftain [[Arassuil]], who led the Northern [[Dúnedain]] in his turn. The great-great-grandfather of [[Aragorn Elessar]], he ruled in the North for sixty-four years, and died an untimely death. He was succeeded by his son [[Argonui]].

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{{disambig-two|the earlier [[Chieftains of the Dúnedain|Chieftain]]|father of [[Aragorn]]|[[Arathorn II]]}}